A brass-bound trunk mistakenly delivered to Nancy's cabin on a New York-bound ocean liner becomes the first clue leading her to suspect that international jewel thieves are aboard.

When Alfie McQuinn, the notorious jewel thief, is killed on a job, his last words to his son, March, are to "find jewels" and this instruction leads the boy to Jules, the twin sister he never knew he had--and the perfect partner to carry on the family business.

Daring thefts of priceless treasures are all over the news. The crimes have the pawprints of international jewel thief The Black Cat - Ben's very own Gangsta Granny - all over them. But with Granny gone, who on earth could pull off such daring heists? Can Ben crack the case?

The jewel hunt continues as the girls set out to protect an emerald necklace belonging to a famous reality TV show star. Now all they need to do is keep their enemies at bay, and the race for the Martha Washington jewels will finally be in their favor! But tensions are running high, and with celebrity stylists and TV crews everywhere, the Jewels are finding it hard to concentrate. And it's not long before their friendship starts to suffer. Thankfully,...

March and Jules are teenage twins, following in their father's footsteps as jewel thieves, but when their latest job goes wrong they end up with one jewel, a sapphire called the Morning Star, one of three cursed jewels--and the only way they can break the curse is to elude the FBI, Interpol, and a gang of international criminals, find the other two jewels, and reunite them.

By day Rémy Brunel is a daring circus acrobat, by night she is an equally talented jewel thief currently assigned to steal a famous diamond in Victorian London--but when the theft goes wrong she finds herself allied with a young policeman as they try to find the elusive gem.